Environmental Science and Pollution Research

, Volume 25, Issue 31, pp 31136–31148 | Cite as

Magnetic biochar-based manganese oxide composite for enhanced fluoroquinolone antibiotic removal from water

  • Ruining Li
  • Zhaowei Wang
  • Xiating Zhao
  • Xi Li
  • Xiaoyun XieEmail author
Research Article


Magnetic biochar-based manganese oxide composite (MMB) and raw biochar (BC) were synthesized via pyrolysis at a temperature of 500 °C under anoxic conditions of potato stems and leaves, characterized, and successfully used for the removal of norfloxacin (NOR), ciprofloxacin (CIP), and enrofloxacin (ENR) as representative compounds of fluoroquinolone antibiotics (FQs). Characterization results suggested that Fe3O4 and MnOx are the dominant crystals in MMB. MMB possessed large surface area and pore volume than BC. Batch adsorption experiments showed that the maximum adsorption abilities of MMB for norfloxacin (NOR), ciprofloxacin (CIP), and enrofloxacin (ENR) were 6.94, 8.37, and 7.19 mg g−1. In comparison to BC, the adsorption abilities of MMB increased 1.2, 1.5, and 1.6 times for NOR, CIP, and ENR, respectively. The pseudo-second-order kinetic model and the Langmuir model correlated satisfactorily to the experimental data. Thermodynamic studies revealed that the adsorption processes were spontaneous and endothermic. The adsorption capacity of MMB decreased with increasing solution pH (between 3.0 and 10.0) and increasing ionic strength (0.001–0.1). The MMB with high FQ removal efficiency, easy separation, and desirable regeneration ability may have promising environmental applications for the removal of fluoroquinolone antibiotics from water environment.


Biochar composite Magnetic Manganese oxide Characterization Fluoroquinolone antibiotics Adsorption mechanism 



This work was supported by Gansu Natural Science Fund, China (17JR5RA218) and the Fundamental Research Funds for the Central Universities at Lanzhou University (lzujbky-2017-212, lzujbky-2015-184).

Supplementary material

11356_2018_3064_MOESM1_ESM.doc (5.4 mb)
ESM 1 (DOC 5573 kb)


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Ruining Li
    • 1
  • Zhaowei Wang
    • 1
  • Xiating Zhao
    • 1
  • Xi Li
    • 2
  • Xiaoyun Xie
    • 1
    Email author
  1. 1.College of Earth and Environmental SciencesLanzhou UniversityLanzhouChina
  2. 2.School of Public HealthLanzhou UniversityLanzhouChina

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